File talk:Logarithm derivative.svg

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python source seems corrupted: 

 y3 = [][0],1.5), lineEQ(x3[0],1.5), lineEQ(x3[1],1.5)]
取自“https://commons.wikimedia.org/w/index.php?title=File_talk:Logarithm_derivative.svg&oldid=70620075”